Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'faf505484214648e0d83d4e3005b9f7c41d6e5867151033c44dae6f67fca5cf8' 
  AND token = 'xQws15y5L6Bnv7Ky0MNjFU8UtGYK1m9jT1q6LVHqGno=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}